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| author | Karol Kolacinski <karol.kolacinski@intel.com> | 2021-11-04 14:52:11 +0100 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2021-12-14 11:29:34 -0800 |
| commit | 0013881c1145d36bf26165bb70fdd7560a5507a3 (patch) | |
| tree | 460d107a42b4f5626c81c1425ff351f382adc999 /drivers | |
| parent | 3dd7d40b43663f58d11ee7a3d3798813b26a48f1 (diff) | |
| download | lwn-0013881c1145d36bf26165bb70fdd7560a5507a3.tar.gz lwn-0013881c1145d36bf26165bb70fdd7560a5507a3.zip | |
ice: Use div64_u64 instead of div_u64 in adjfine
Change the division in ice_ptp_adjfine from div_u64 to div64_u64.
div_u64 is used when the divisor is 32 bit but in this case incval is
64 bit and it caused incorrect calculations and incval adjustments.
Fixes: 06c16d89d2cb ("ice: register 1588 PTP clock device object for E810 devices")
Signed-off-by: Karol Kolacinski <karol.kolacinski@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_ptp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.c b/drivers/net/ethernet/intel/ice/ice_ptp.c index bf7247c6f58e..ad7cabe7932f 100644 --- a/drivers/net/ethernet/intel/ice/ice_ptp.c +++ b/drivers/net/ethernet/intel/ice/ice_ptp.c @@ -705,7 +705,7 @@ static int ice_ptp_adjfine(struct ptp_clock_info *info, long scaled_ppm) scaled_ppm = -scaled_ppm; } - while ((u64)scaled_ppm > div_u64(U64_MAX, incval)) { + while ((u64)scaled_ppm > div64_u64(U64_MAX, incval)) { /* handle overflow by scaling down the scaled_ppm and * the divisor, losing some precision */ |